This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X260S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SI100 Standard Cylinder SI100X260S
The AirTAC Airtac SI100 Standard Cylinder SI100X260S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 260mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X260S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke260 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X260S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SI100 Standard Cylinder SI100X260S
The AirTAC SI100X260S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 260mm stroke. It delivers a push force of 3927 N at 0.5 MPa via its G1/2 port. AirTAC replaced this legacy unit with the SAI100X260S, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, output force, and port size to fit existing fixtures seamlessly.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also introduces SAIL, SAIF, and BSAI lock variants the SI lacked. This -S SKU includes a piston magnet for CS1-B/DS1-B sensors, though the SAI replacement uses current AirTAC switches.
Airtac SI100 Standard Cylinder SI100X260S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X260S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X260S |
| Bore size | Ø100 mm |
| Stroke | 260 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI100X260S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAI100X260S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI100 Standard Cylinder SI100X260S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×260 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SI100 Standard Cylinder SI100X260S Is Used
Heavy-Duty Pressing
Drives robust pressing and stamping operations requiring substantial thrust, delivering 5497 N at 0.7 MPa to seat bearings and form heavy components.
Pallet Diverting
Actuates large-scale material handling diverters and stops on conveyor lines, using the 260mm stroke to clear wide pallet profiles safely.
Automated Clamping
Secures large workpieces in machining and welding cells, providing stable holding power up to a theoretical 801 kgf at 1.0 MPa.
Replacing the Airtac SI100 Standard Cylinder SI100X260S with the SAI100X260S
To replace the SI100X260S, order the SAI100X260S and verify your ISO 15552 mounting interface, 100mm bore, 260mm stroke, G1/2 port (PT/G/NPT), and mounting accessory. Because this stroke is 260mm, ensure adequate guide support to prevent rod bending and side-load wear. Sizing both ways: if you need less force, the 80mm bore yields 2513 N push at 0.5 MPa; if you need more, the 125mm bore yields 6136 N. Note that a plain ISO 15552 cylinder does not hold load on air loss—the cushion only decelerates. For load holding, use an external pilot check valve, rod lock, or the SAIL/BSAI lock variant. If you need a self-contained valve, the SAIF variant (bores 32-100) integrates a 4M valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X260S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI100 Standard Cylinder SI100X260S FAQ
Yes, the SI100X260S is discontinued. The direct replacement is the AirTAC SAI100X260S. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 260mm stroke, output force, G1/2 port, and mounting interface for a seamless fixture swap.
This 100mm bore double-acting cylinder features a G1/2 air port and a 25mm piston rod. It generates a push force of 3927 N and a pull force of 3681 N at 0.5 MPa. At 0.7 MPa, the push force is 5497 N, reaching 7068 N at 0.9 MPa. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X260S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X260S replacement — usually within 7-8 hours.